2158399948111 has 8 divisors (see below), whose sum is σ = 2478545395200. Its totient is φ = 1858909046040.

The previous prime is 2158399948091. The next prime is 2158399948147. The reversal of 2158399948111 is 1118499938512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2158399948111 - 2¹⁹ = 2158399423823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2158399948111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158399943111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5163636031 + ... + 5163636448.

It is an arithmetic number, because the mean of its divisors is an integer number (309818174400).

Almost surely, 2^{2158399948111} is an apocalyptic number.

2158399948111 is a deficient number, since it is larger than the sum of its proper divisors (320145447089).

2158399948111 is a wasteful number, since it uses less digits than its factorization.

2158399948111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10327272509.

The product of its digits is 5598720, while the sum is 61.

The spelling of 2158399948111 in words is "two trillion, one hundred fifty-eight billion, three hundred ninety-nine million, nine hundred forty-eight thousand, one hundred eleven".